class_docstr: A class to embed a kernel into the GTK main event loop.
      
docstr: Starts the GTK main event loop and sets our kernel startup routine.
          
docstr_tok: ["Starts","the","GTK","main","event","loop","and","sets","our","kernel","startup","routine","."]
code: def start(self):
      """Starts the GTK main event loop and sets our kernel startup routine."""
      # Register our function to initiate the kernel and start gtk
      gobject.idle_add(self._wire_kernel)
      gtk.main()
  
file_path: catboost/contrib/python/ipykernel/py2/ipykernel/gui/gtkembed.py
imports: import sys
  import gobject
  import gtk
label_desc: Use image node_id 2 for calling the GTKEmbed obj's underlying member method code with example usage: obj.start() without return types